Why is my blue spruce Bush dying?

Why is my blue spruce Bush dying?

Why is my blue spruce Bush dying?

Blue spruce trees are susceptible to an infectious needle disease caused by the fungus Rhizosphaera. The disease, referred to as Rhizosphaera needle cast, is the most common problem seen on blue spruce samples that are submitted to the Plant Disease Clinic. ... In general, trees appear to die from the bottom upward.

How do you treat a sick Blue Spruce?

Fungicides with the active ingredient chlorothalonil, copper hydroxide or mancozeb will protect new spruce needles from infection by Rhizosphaera.

  1. Make one application in spring or early summer when the new needles have grown to half their mature length.
  2. Make a second application 3 to 4 weeks later.

Why are the needles on my blue spruce turning brown?

Browning of the inner needles on the tree is an early symptom. ... Blue spruce trees are also susceptible to Rhizosphaera needle cast, caused by the fungus Rhizosphaera. The disease begins on the tree's lower branches and works its way upward. Needles turn purple or brown in color and eventually fall off.

What is the life expectancy of a blue spruce tree?

While blue spruce grows relatively slowly, it is long-lived and may reach ages of 600-800 years.

How can you tell if a blue spruce is dying?

Throughout the Midwest, Colorado blue spruces have been showing needle loss, dead branches, and browning foliage. The first sign of trouble is the browning of needles on the lower branches, which gradually spreads upwards.

Why do blue spruces lose their lower branches?

Finally, in nature, blue spruces also lose their lower branches. This is due to competition between the trees, they begin to shade each other and lose their lower branches. Therefore, the removal of the lower branches is a completely natural process.

Is it OK to remove branches from a blue spruce tree?

Removing affected branches is usually the best action to improve the tree’s appearance and slow the spread of disease within the tree. For insect or mite issues, insecticides or miticides can be effective, however selection of the proper product and timing are critical. Should we continue to plant blue spruce trees?

What's the name of the blue spruce tree?

The end of a spruce tree branch covered in snow. Whether you're growing Colorado blue spruce (Picea pungens) for its silvery blue foliage or white spruce (Picea glauca) as a wind screen, these rugged trees withstand frigid temperatures, but are finicky about the conditions they grow in.

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